Change Potential to Obtain Signals in Vacuum Tube Detectors
The article explains how a definite plate potential yields strongest signals for each filament, warns that soft gaseous tubes with low filament leads can harm life, and stresses setting the filament rheostat for maximum series resistance. It covers proper tube seating, contact checks, and circuit inspection if no signal is heard, noting a three-electrode tube can replace the crystal detector for louder, stable output.
Vacuum tube detector circuit with A battery potentiometer
A discussion on fine tuning plate voltage in a three electrode vacuum tube using an A battery potentiometer of 200 to 500 ohms. It explains wiring, safeguards against bucking overflow with gas-filled tubes, and mounting on an 8 by 10 inch base with a filament rheostat.
Equipment list for home canning vegetables and fruit
The United States Department of Agriculture urges housewives to prepare a full set of canning utensils. The list covers grading and washing trays, vegetable brushes, colanders, cheesecloth, baskets, containers, kettles, a teakettle, knives, measuring tools, lifting devices for jars, lifters, tray with handles, false bottom, strawberry hullers, slicers, parers, choppers, scales, saccharometer, sieves, funnels, packing spoons, paddles, outdoor tables, garbage pail, flytraps, kerosene stove, and fresh lids and rings for jars or tins.
MENTIONED IN THIS ARTICLE
United States Department of Agriculture
United States ‘Department of Agriculture
Dust Radio Screen Holds Earth in Wireless Net
Professor J A Fleming of University College London claims electrified dust lofted from the wake forms a atmospheric envelope about 100 miles high. This dust screen acts as a wireless tube enabling long-distance waves of about ten miles in length to travel 6 000 to 12 000 miles. Without it, Fleming says wireless energy would drift away from the earth.
MENTIONED IN THIS ARTICLE
Earth
J. A. Fleming
University College
London
Measuring an Electron by Millikan Oil Drop Experiment
American Professor Millikan conducted a landmark experiment in Chicago to measure electron charge. He suspended a microscopic oil drop about 110,000th inch in diameter between controlled plates, illuminated it, and tracked its rise and fall as electrons were added or removed.
MENTIONED IN THIS ARTICLE
Millikan
Chicago
Tips for Fans Prevent Radio Jam and Improve Set Performance
A meeting of station representatives near New York and New Jersey aims to curb radio interference. Advice covers using condenser plates of twenty three or fewer and minimizing secondary circuit capacity to improve tuner performance. Detect open circuits by tracing wiring when a steady hum is heard. Spaghetti tubing over wires reduces short circuits and enhances appearance. More fans seek radio-frequency amplification over audio frequency for efficiency.
MENTIONED IN THIS ARTICLE
New York
New Jersey
Javelle water as a home bleaching agent for stains
Javelle water, made at home, is a strong bleaching liquid for stubborn stains on uncolored cotton or linen. It should not touch silk or wool and must be neutralized with oxalic acid after each use. Prepare by dissolving washing soda and calcium hypochlorite, filter, store darkly, and apply with care to avoid fiber damage.
MENTIONED IN THIS ARTICLE
United States Department of Agriculture
Cleaning a Slimy Sponge With Salt Water Bath
To remove slime soak the sponge in a strong salt water solution for hours. Change the water occasionally and squeeze the sponge. Rinse the sponge in clean water afterward.
House Fly Most Dangerous A Warning From Entomologists
Special Bulletin No. 48 by Dr. W A Riley of the University of Minnesota outlines two main strategies against house flies: breeding control and protection against insects. Cleaning manure piles garbage and stagnant pools is urged as the best defense and citizens are urged to keep their premises free of nuisances.
MENTIONED IN THIS ARTICLE
W. A. Riley
Division of Entomology
University of Minnesota
Doctor Riley
Household Tips From An 18th Century Column
A collection of practical advice mentions buying a coarse scrubbing brush for muddy shoes, using a stiff vegetable brush to peel raw potatoes, and judging egg age by how high the blunt end rises. It also suggests placing good reading matter in guest rooms, using a large cork to apply polish on knife blades, and cleaning lamp burners by boiling them in strong vinegar with onion peels.
Missouri News Nuggets Reflects Strikes Parole and Policy
U S marshals take command at Trenton after report of an attempt on Rock Island train No 69 bootleggers called out at Trenton shops. Parole granted to Julin of St Louis for streetcar fare theft. Missouri districts reorganization absorbs St Charles Macon Gallatin districts. Several local crimes, appointments, and school plans noted across the state.
MENTIONED IN THIS ARTICLE
United States
Trenton
I. K. Parshall
Kansas City
Rock Island
St. Paul
Frank J. Mapel
Gallatin
Methodist Church, South
Missouri
St. Charles
Macon
Hannibal
Chillicothe
St. Joseph
Hyde
Harry J. Julin
St. Louis
Julin
Chris Gerhardt
Lawrence McDaniel
Abington
Reed
Democratic Committee
Butler County
Poplar Bluff
Brown
William C. McClure
Missouri School For Deaf
Fulton
Jefferson City
Lawrence Neal
New Madrid County
Neal
L. R. Neal
Parma
George Hopps
Crocker
Springfield
Hopps
Walter Steininger
Chamber of Commerce of
Clifford Scruggs
E. W. Decker
Kirksville
American Osteopathic Association
Board of Education
Troy
Lane & Freeman
Ambrose Kerr
Bank of
Lilbourn
Center Oil and Gas Company
Center
Marshal
Arro Street
Horine
Rhea-Patterson Milling Co
Monnett
L. Mace
Edgar C. Nelson
Bunceton Eagle
Ralph G. Bray
Washington, D. C
Mack F. Denman
Bray
Southeast Missourian
Hunter
Reno, Ney
Havana
Cuba
Missouri School of Journalism
Columbia
Denman
Harry Denman
Farmington (Mo
Missouri Farm Bureau Federation
Woodville
Thurston
Lfe
Marcia E. Herbold
Supreme Court
City Light and Traction Company of
Sedalia
State Public Service Commission
Magnolia
J. 8. Huerter
Gravois
Frank Bunn
Huerter
Atlas Powder Company
McKittrick
Big Spring
Montgomery
McKittrick Boat Landing
Glacier Trail
Vine Street Transmission Company
Chris. Maffrey
A. M. Aquires
George C. Poehlman
Jasper County
Ball Farm
Alba
Jack Dempsey
American Legion
Vine Street
Webster Street
Also Mentioned on This Page
Florentiomer
Bbat
Missouri News Nuggets
H. E. Birdsong
University of Missouri, Columbia
Kansas State Normal School
University of Wisconsin
Albany
U.S. Department of Labor
Joplin
Nevada
Missouri American Legion
Chamber of Commerce
Claire E. Voelker
Winona